Hermann aigner



(no Model.)

' H.- AIGNER.

ARTIFICIAL FUEL.

No. 314,097. Patented Mar. 17, 1885.

UNITED STATES PATENT OFFICE.

HEBMANN AIGNER, OF VIENNA, AUSTRIA-HUNGARY.

ARTIFICIAL FUEL.

SPECIFICATION forming part of Letters Patent No. 314,097, dated March 17, 1885.

Application filed December 8, 1884. (No model.) Patented in Austria-Hungary June 29, 1884, No. 34 and No. 1,079.

To all whom it may concern:

Be it known that I, HERMANN AIGNER, a subject of the Emperor of Austria, and a resident of Vienna, in the Empire of Austria, have invented certain, new and useful Improvements in Artificial Fuel, of which the following is a specification.

According to the present improvements a mixture of coal-tar pitch and vegetable fiber is molded into perforated blocks or bricks, which are then coked,and finally again pressed and perforated.

With reference to the accompanying drawings, Figures 1 and 2 are views, and Figs. 3 and 4 sections, of fuel-bricks in natural size and manufactured according to the present invention.

The process of executing the present im provements is as follows: One hundred pounds of ordinary coal-tar pitch are successively melted in a boiler, and then five hundred pounds of vegetable fiber are intimately mixed with the melted pitch. As vegetable fiber we preferably employ waste cotton and wood, or any other suitable organic fibrous material which on combustion evolves only hydrocarbons and leaves little or no ashes. The thorough mixing of the materials may be effected by any mechanical agitator, and is continued until the mass has assumed a dough-like consistence. The mixture isremoved from the boiler and is spread over heated stone flags, and is then molded into pieces of 2 by 2 by 4 inches and perforated. These perforated.

bricks are then subjected to dry distillation or coking in the same way as coals in manufac turing coalgas. This coking is effected, as indicated by Fig. 5, in a wiregauze cylinder, a, into which the perforated blocks arranged on the rod [1 arei'nserted. The cylinder at is put into a retort, 0, provided with gas-escape pipes c. A number of such retorts c are arranged in a furnace of the same kind as those used in ordinary works for manufacturing ordinary coal-gas. The blocks thus coked are again molded while warm. so that they assume the perforated and beveledshape shown in the drawings.

The hole shown in the drawings forms a pas sage for the flame, and largely contributes to increasing the heat of combustion I claim The described method of manufacturing artificial fuel, consisting in forming perforated blocks of aniixture, substantially as described, of coal-tar pitch and vegetable fiber, subsequently coking such blocks, and in finally pressing the same into the perforated beveled shape, essentially as described, and shown in the drawings.

In testimony whereof I have affixed my signature in presence of two witnesses.

HERMANN AIGNER.

\Vitnesses:

G. O. PAGET,

E. G. F. ROELLER. 

